body, div, span, header, footer, nav, section, aside, article, ul, dl, dt, dd, li, a, p, h1, h2, h3, h4,h5, h6, i, b, textarea, button, input, select, figure, figcaption, {
  padding: 0;
  margin: 0;
  list-style: none;
  font-style: normal;
  text-decoration: none;
  border: none;
  color: #333;
  font-weight: normal;
  font-family: "Microsoft Yahei";
  box-sizing: border-box;
  -webkit-tap-highlight-color:transparent;
  -webkit-font-smoothing: antialiased;
  &:hover{
    outline: none;
  }
}

/*定义滚动条高宽及背景 高宽分别对应横竖滚动条的尺寸*/
::-webkit-scrollbar
{
  width: 0px;
  height: 0px;
  background-color: #F5F5F5;
}

/*定义滚动条轨道 内阴影+圆角*/
::-webkit-scrollbar-track
{
  -webkit-box-shadow: inset 0 0 1px rgba(0,0,0,0);
  border-radius: 10px;
  background-color: #F5F5F5;
}

/*定义滑块 内阴影+圆角*/
::-webkit-scrollbar-thumb
{
  border-radius: 10px;
  -webkit-box-shadow: inset 0 0 6px rgba(0,0,0,.3);
  background-color: #555;
}

input[type="button"], input[type="submit"], input[type="search"], input[type="reset"] {
  -webkit-appearance: none;
}

textarea { -webkit-appearance: none;}

html,body{
  height: 100%;
  width: 100%;
  background-color: #F5F5F5;
}


.clear:after{
  content: '';
  display: block;
  clear: both;
}

.clear{
  zoom:1;
}

.back_img{
  background-repeat: no-repeat;
  background-size: 100% 100%;
}

.margin{
  margin: 0 auto;
}

.left{
  float: left;
}

.right{
  float: right;
}

.hide{
  display: none;
}

.show{
  display: block;
}

.ellipsis{
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.paddingTop{
  padding-top: 1.95rem;
}

@keyframes backOpacity{
  0%   { opacity: 1 }
  25%  { opacity: .5 }
  50%  { opacity: 1 }
  75%  { opacity: .5 }
  100% { opacity: 1 }
}

.animation_opactiy{
  animation: backOpacity 2s ease-in-out infinite;
}
